//模拟lodash中flowRight
const _ = require('lodash')

const reverse = arr => arr.reverse()
const first = arr => arr[0]
const toUpper = s => s.toUpperCase()
// function compose(...args){
//     return function(value){
//         return args.reverse().reduce(function(acc, fn){
//             return fn(acc)
//         }, value)
//     }
// }
const compose = (...args) => value => args.reverse().reduce((acc, fn) => fn(acc), value)
const f = compose(toUpper, first, reverse)
console.log(f(['one', 'two', 'three']))
